dBZ-48 User Manual www.apex-audio.
APEX NV Schoebroekstraat 62 3583 Beringen (Paal) BELGIUM Tel: Fax: e-mail: website: + 32 (0)11 28 61 91 + 32 (0)11 25 56 38 info@apex-audio.eu www.apex-audio.eu Trademarks The APEX trademark is owned by APEX N.V. All other brand, product and company names and any other registered names or trade marks mentioned in this manual belong to their respective owners. Disclaimer APEX N.V. has taken all possible steps to ensure that the information given here is both correct and complete.
dBZ-48 Stereo zone mixer March 2010 Serial number of this product: © 2010 APEX N.V. All rights reserved. This manual may not be reproduced or transmitted, either in part or as a whole, by any means, be they mechanical or electronic, without the express written permission of APEX N.V.
Important safety instructions Important safety instructions CAUTION: to reduce the risk of electric shock, do not remove cover (or back). No user-serviceable parts inside. Refer servicing to qualified service personnel. The lightning flash with arrowhead symbol, within equilateral triangle, is intended to alert the user to the presence of uninsulated “dangerous voltage” within the product’s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons.
Cleaning, maintenance and servicing Unplug the apparatus from the wall outlet before cleaning. Do not use liquid cleaners or aerosol cleaners. Use a damp cloth for cleaning. Do not attempt to service this product yourself, as opening or removing covers may expose you to dangerous voltage or other hazards. Refer all servicing to qualified service personal.
Table of contents Table of contents Registration Introduction Product highlights Foreword 7 8 8 8 Before you get started 9 9 9 9 9 9 About this manual Inspection and unpacking Operating environment Power requirements Installation Front and rear panel description 10 Front panel Rear panel 10 11 Overview 12 Wiring the unit Overview dBZ-48 Block diagram 12 12
Registration Register your product Please take the time to register your product on-line by typing the following URL in your browser: http://productregistration.apex-audio.eu/ As well as registering the product on-line, please take the trouble to record the serial number of the unit in the space provided on page 3 of the manual, and keep the manual in a safe place.
Introduction Dear customer, Thank you for buying the Apex dBZ-48. The dBZ-48 is a professional quality, 2-into-4 stereo zone mixer designed to manage audio distribution in a variety of sound reinforcement applications including live PA and installed sound systems.
Before you get started About this manual Power requirements Carefully read all instructions and warnings before operating this appliance. Keep this manual in a safe place so that it can be referred to when required. BEFORE you connect any unit to the mains, please make sure that your local AC supply is within the range of voltages required by the unit. Latest manual revision can be downloaded from: http://www.apex-audio.
Front and rear panel description Front panel 4 7 12 15 13 6 5 14 10 1 16 11 3 2 8 17 18 9 Front panel 10 Input Controls: Output Controls: Front panel controls for IN A are described: those for IN B are identical. Front panel controls for OUT 1 are described: those for OUTS 2 to 4 are identical. 1 IN A LEVEL is a stereo control adjusting input stage gain, with range from -∞ to +6 dB. The control is centre-detented at unity gain (0 dB).
Rear panel 2 3 6 1 4 5 Rear panel All connections to the dBZ-48 are made via the rear panel. Rear panel connections for IN A are described: those for IN B are identical. Similarly, the details of the output connections are identical for all four channels. 1 Input A L & R. Inputs are on latching 3-pin female XLRs, with separate connectors for left and right channels. The inputs are electronically balanced.
Overview Wiring the unit The use of twin-and-screen cable is recommended for both inputs and outputs. Inputs Preferred wiring for both balanced and unbalanced sources is illustrated below: Balanced groundlift jumpers on pcb Outputs Preferred wiring for both balanced and unbalanced destinations is illustrated below: Unbalanced Balanced Unbalanced A ‘ground lift’ facility is available on the dBZ-48’s inputs, which may be useful in resolving earth hum issues.
dBZ-48 Block diagram 13
Using the dBZ-48 Using the dBZ-48 Operation of the dBZ-48’s input and output sections is entirely straightforward, and requires only correct adjustment of the respective level controls. Start with all the front panel rotary controls fully anticlockwise. Connect the stereo input source(s) to IN A and IN B and the stereo outputs to their respective amplifiers (or other signal processing) as appropriate.
Applications Stereo music distribution In this example, the dBZ-48 is used to feed 4 zones or areas of a building, typically an office, retail store, restaurant, coffee shop, or similar. The requirement is to have stereo music playing throughout the building, but at different sound levels in the various zones. The dBZ-48 is excellent for this application, as it provides simple central control of the level in each zone, as well as overall “master” level control.
Bar/Pub with two music sources Many venues have large-screen TVs installed in several areas, but often wish to only use those in certain areas, and play background music elsewhere. The arrangement shown in the first example above can be simply extended to accommodate this requirement. In this example, the TV tuner or satellite receiver’s audio output is connected to In B and the background music source to In A. Each of the four outputs feeds one of the venue’s areas via a power amplifier.
Technical specifications Electrical specifications Balanced line level input Connectors Impedance Max. input level CMRR 3-pin XLR > 10 k ohm, balanced +21 dBu, balanced, 1 % THD+N > 60 dB, 1 kHz Balanced line level output Connectors Impedance Max. output level 3-pin XLR < 50 ohm, balanced + 26 dBu into 600 ohm, balanced, 1 % THD+N Audio performance (unity gain, all settings flat) Frequency response THD+N Dynamic range Crosstalk 20 Hz - 20 kHz, +/- 0.
Mechanical specifications Weight Dimensions Unit Package Width Height Depth 482 mm (19-inch) 44 mm (1U) 183 mm Width Height Depth 530 mm 115 mm 275 mm Unit (Nett) 2,5 kg Unit + Package (Shipping) 3,7 kg In the interest of product development, Apex reserve the right to modify or improve specifications of this product at any time, without prior notice and without any obligation to change or update equipment already delivered.
Limited warranty Limited warranty Apex N.V. (“Apex”) warrants you, the original purchaser, or any party that purchases the device from you, that its products are free from defects in material and workmanship under normal use for a period of two (2) years from the date of original purchase. The date of purchase is the date which appears on the first invoice or any other proof of purchase provided by an Apex approved dealer.
www.apex-audio.eu info@apex-audio.eu Copyright © 2010 APEX N.V. All rights reserved. This manual may not be reproduced or transmitted, either in part or as a whole, by any means, be they mechanical or electronic, without the express written permission of APEX N.V.
